AMERICAN FOULBROOD. 43 



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18. Muck, Oswald. 



1915. Seuchen der Bienenbrut. In Wiener tierarztlichen Monatsschrift,. 

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19. SCHIRACH, A. G. 



1771. Histoire naturelle de la reine des abeilles, avec I'art de former des essaims. 

 Ixiii, 269 p., 3 pi. La Haye. 



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1907. The cause of American foulbrood. U. S. Dept. Agr. Bur. Ent. Circ. 

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1914. Destruction of germs of infectious bee diseases by heating. U. S. Dept. 

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1917. Sacbrood. U. S. Dept. Agr. Bui. 431. 55 p., 33 fig., 4 pi. February 9. 

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1919. Nosema-disease. U. S. Dept. Agr. Bui. 780. 59 p., 7 fig., 4 pi. June 12. 

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1920. European foulbrood. U. S. Dept. Agi-. Bui. 810. 39 p., 6 fig., 8 pi. (In 

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. 1919. Unheated egg-yolk media. In Science. N. S. v. 49, no. 1267, p. 362, 

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1910. Die Faulbrut and ihrer Bekampfung. 32 p., 8 fig., 4 pi. Stuttgart. (Hand- 

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